Five colorful rings are fun for younger babies to grasp, hold, shake and explore. The littlest ring has a shiny, reflective surface for baby to discover inside—with colorful, swirling beads that make fun rattle sounds! When baby is ready to sit and stack, baby can place rings on the post, then bat at the wobbly base to make it rock back and forth. Stacking helps baby develop eye-hand coordination, and introduces baby to the concept of relative size as they learn to sort and stack from biggest to smallest!Five colorful rings to grasp & stackBat-at rocker baseTop ring has shiny reflective surface inside with swirling, rattling beadsIntroduces concepts of relative size & stackingHelps baby learn to differentiate among colors and sizes of rings